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Title:
Phase-contrast detection of telescope seeing errors and their correction
Authors:
Dicke, R. H.
Affiliation:
AA(Princeton University, Princeton, N.J.)
Publication:
Astrophysical Journal, vol. 198, June 15, 1975, pt. 1, p. 605-615. NSF-supported research. (ApJ Homepage)
Publication Date:
06/1975
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Error Correcting Devices, Optical Correction Procedure, Phase Error, Real Time Operation, Telescopes, Error Analysis, Instrument Errors, Phase Shift, Reference Stars, Systems Engineering
DOI:
10.1086/153639
Bibliographic Code:
1975ApJ...198..605D

Abstract

The technique of phase-contrast microscopy applied to a telescope permits the detection and correction of phase errors in real time. These corrections can be made separately for two or more levels of the atmosphere. It may be possible to correct the seeing errors in a circular patch up to 2 min in diameter about a reference star with an apparent magnitude of 11 or brighter.

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